The Cadherin-catenin Complex is Necessary for Cell Adhesion and Embryogenesis in Nematostella Vectensis
Overview
Reproductive Medicine
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The cadherin-catenin complex is a conserved, calcium-dependent cell-cell adhesion module that is necessary for normal development and the maintenance of tissue integrity in bilaterian animals. Despite longstanding evidence of a deep ancestry of calcium-dependent cell adhesion in animals, the requirement of the cadherin-catenin complex to coordinate cell-cell adhesion has not been tested directly in a non-bilaterian organism. Here, we provide the first analysis of classical cadherins and catenins in the Starlet Sea Anemone, Nematostella vectensis. Gene expression, protein localization, siRNA-mediated knockdown of α-catenin, and calcium-dependent cell aggregation assays provide evidence that a bonafide cadherin-catenin complex is present in the early embryo, and that α-catenin is required for normal embryonic development and the formation of cell-cell adhesions between cells dissociated from whole embryos. Together these results support the hypothesis that the cadherin-catenin complex was likely a complete and functional cell-cell adhesion module in the last common cnidarian-bilaterian ancestor. SUMMARY STATEMENT: Embryonic manipulations and ex vivo adhesion assays in the sea anemone, Nematostella vectensis, indicate that the necessity of the cadherin-catenin complex for mediating cell-cell adhesion is deeply conserved in animal evolution.
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Mbogo I, Kawano C, Nakamura R, Tsuchiya Y, Villar-Briones A, Hirao Y Zoological Lett. 2024; 10(1):20.
PMID: 39623505 PMC: 11613877. DOI: 10.1186/s40851-024-00243-y.
Atajanova T, Kang E, Postnikova A, Price A, Doerr S, Du M Proc Natl Acad Sci U S A. 2024; 121(46):e2408763121.
PMID: 39471210 PMC: 11573592. DOI: 10.1073/pnas.2408763121.
Atajanova T, Kang E, Postnikova A, Price A, Doerr S, Du M bioRxiv. 2024; .
PMID: 38645007 PMC: 11030385. DOI: 10.1101/2024.04.07.588493.
Origin and development of primary animal epithelia.
Doerr S, Zhou P, Ragkousi K Bioessays. 2023; 46(2):e2300150.
PMID: 38009581 PMC: 11164562. DOI: 10.1002/bies.202300150.
The α-Catenin mechanosensing M region is required for cell adhesion during tissue morphogenesis.
Sheppard L, Green D, Lerchbaumer G, Rothenberg K, Fernandez-Gonzalez R, Tepass U J Cell Biol. 2022; 222(2).
PMID: 36520419 PMC: 9757846. DOI: 10.1083/jcb.202108091.